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| Registros recuperados: 27 | |
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| Mejer, Helena; Roepstorff, Allan; Thamsborg, Stig Milan; Lydehøj Hansen, Laurits; Bach Knudsen, Knud Erik. |
| Two similar trials were carried out to examine how dietary inclusion of an easily fermentable carbohydrate source such as chicory roots (Cichorium intybus) may effect established and establishing helminth infections in pigs. In the first trial varying feeding periods with crude chicory roots naturally rich in fructans (primarily inulin) were tested whereas crude chicory roots were compared with dried chicory roots and purified inulin in the second trial. In both trials pigs were infected with 3000 O. dentatum L3-larvae while fed a traditional standard diet. When the infections were well established and patent, experimental diets were introduced and the faecal egg counts monitored. Two weeks before the pigs were slaughtered all animals were infected with... |
| Tipo: Journal paper |
Palavras-chave: Pigs; Health and welfare. |
| Ano: 2005 |
URL: http://orgprints.org/4523/1/4523.pdf |
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| Johansen, Anders; Hansen, Christian M.; Andreasen, Christian; Carlsgart, Josefine; Nielsen, Henrik Bangsø; Roepstorff, Allan. |
| Anaerobic digestion of residual materials from animals and crops offers an opportunity to simultaneously produce bioenergy and plant fertilizers at single farms and in farm communities where input substrate materials and resulting digested residues are shared among member farms. A surplus benefit from this praxis may be the suppressing of propagules from harmful biological pest like animal parasites, pathogens, and weed seeds. In the BIOCONCENS project (http://www.icrofs.dk/Sider/Forskning/foejoIII_bioconcens.html) batch experiments were performed, where survival of six species of weeds and the pigs large roundworm Ascaris suum (non-embryonated eggs) was assessed under conditions similar to biogas plants managed at meso- (37°C) and thermophilic (50°C)... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Composting and manuring; Health and welfare. |
| Ano: 2011 |
URL: http://orgprints.org/18901/4/18901.pdf |
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| Sehested, Jakob; Søegaard, Karen; Danielsen, Viggo; Roepstorff, Allan; Monrad, Jesper. |
| The aim of the present study was to compare the effect of mixed grazing (MI) by sows and heifers with alternate grazing (AL) or grazing heifers (HN) and sows (SN) alone on animal weight gain, sward structure, herbage quality and composition, and selection during grazing. Mixed or alternate grazing consistently improved the weight gain in both heifers and sows, compared with grazing one species alone, but the positive effect was statistically significant only for heifers. The herbage quality of the MI and AL systems was better compared with the SN system, but not clearly better compared with the HN system. The total animal weight gain (heifers+sows) and estimated herbage intake per hectare were also higher in the MI and AL systems compared with SN and HN... |
| Tipo: Journal paper |
Palavras-chave: Pasture and forage crops. |
| Ano: 2004 |
URL: http://orgprints.org/2971/1/2971.pdf |
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| Mejer, Helena; Roepstorff, Allan. |
| SUMMARY Transmission of Oesophagostomum dentatum and Trichuris suis was studied in outdoor reared pigs. Six farrowing paddocks were naturally contaminated in May to mid June 2001 by experimentally infected seeder pigs. Early July, 1 sow farrowed on each paddock and starting week 3 post partum (p.p.) the offspring was slaughtered serially every 2 weeks for recovery of O. dentatum and T. suis. Faeces was collected regularly for parasite egg counts and acid-insoluble ash (AIA) content as an indicator for geophagy. Weaning took place week 7 p.p. by removing the sow. Paddock infection levels were estimated in mid June (O. dentatum) and late November (O. dentatum and T. suis) using helminth naïve tracer pigs. Soil and vegetation samples were collected... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2006 |
URL: http://orgprints.org/9366/1/9366.pdf |
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| Thomsen, Lisbeth E.; Bach Knudsen, Knud Erik; Roepstorff, Allan. |
| Two diets with contrasting digestibility was formulated - the diet containing resistant carbohydrates (Diet 1) was based on triticale, barley, rapeseed cake and silage as the main ingredients while the diet with fermentable carbohydrates (Diet 2) was based on triticale, barley, blue lupines and chicory roots. Assuming that the pigs will consume approximately 7 % of the dry matter from silage and 15 % from chicory roots, the content of feed units for pigs (FEs) will be 0.96 and 1.09 FEs in Diets 1 and 2, respectively. After two weeks of adaptation, the pigs were infected with 2000 infective eggs of T. suis. Faecal egg samples were taken twice weekly to determine the number of parasite eggs excreted. All the pigs were slaughtered 12 weeks post infection... |
| Tipo: Working paper |
Palavras-chave: "Organics" in general; Health and welfare; Feeding and growth. |
| Ano: 2005 |
URL: http://orgprints.org/5991/1/5991.doc |
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| Roepstorff, Allan; Mejer, Helena; Thomsen, Lisbeth E.; Thamsborg, Stig M.; Byrne, Derek V.; Hansen, Laurits L.; Bach Knudsen, Knud Erik; Møller, Kristian. |
| The carbohydrate inulin is known to reduce the production of skatole in pigs. This is caused by inulin changing the intestinal flora, so that the bacteria that produce skatole are held in check. This change in intestinal flora also reduces the number of intestinal parasites in the pigs. However the high cost of inulin makes its use in pig feed impractical. Chicory root contains inulin and a series of other carbohydrates and secondary metabolites. Therefore we have examined whether chicory root can replace pure inulin and thereby reduce boar taint, improve the taste of pork and reduce the infection of pigs with pathogenic parasites and bacteria. |
| Tipo: Journal paper |
Palavras-chave: Health and welfare; Feeding and growth. |
| Ano: 2005 |
URL: http://orgprints.org/9369/1/9369.pdf |
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| Katakam, KIran Kumar; Thapa, Sundar; Meyling, Nicholai V.; Dalsgaard, Anders; Roepstorff, Allan; Thamsborg, Stig Milan. |
| The rising demand for pigs produced in organic farming systems, which require access to outdoor areas and associated increased risk of gastrointestinal nematode infections, is creating growing interest in alternative control strategies. Also development of anthelminthic resistance due to extensive use of anthelmintics is a concern in intensive pig production. Use of chitin-degrading microfungi is one of the options. Extensive research has been conducted on biological control of plant pathogenic nematodes using such fungi, and some fungal species are commercially available for plant protection. In contrast, there are only limited laboratory studies conducted on eggs from nematodes which are animal parasites. The aim of present study is to investigate the... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare; Pigs. |
| Ano: 2011 |
URL: http://orgprints.org/20007/3/20007.pdf |
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| Johansen, Anders; Carter, Mette S.; Hauggaard-Nielsen, Henrik; Nielsen, Henrik Bangsø; Andreasen, Christian; Hansen, Christian M.; Carlsgart, Josefine; Roepstorff, Allan. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil quality; Nutrient turnover; Health and welfare. |
| Ano: 2010 |
URL: http://orgprints.org/18902/4/18902.pdf |
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| Mejer, Helena; Leeb, Christine; Heinonen, Mari; Cartaud, Gerald; Prunier, Armelle; Sundrum, Albert; Bochicchio, Davide; Lindgren, Kristina; Wiberg, Sofia; Früh, Barbara; Bonde, Marianne; Roepstorff, Allan. |
| Prior to a European prevalence survey of intestinal parasites of organic pig herds it was decided to introduce one common technique for faecal egg counts and to compare its execution at all involved laboratories to ensure data compatibility. It was clearly shown that avoid confounding variation it is extremely important not only to use identical techniques but also to implement the technique in exactly the same way. |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2009 |
URL: http://orgprints.org/18410/1/18410.pdf |
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| Roepstorff, Allan; Mejer, Helena; Thomsen, Lisbeth E.; Thamsborg, Stig M.; Byrne, Derek V.; Hansen, Laurits L.; Bach Knudsen, Knud Erik; Møller, Kristian. |
| Sukkerstoffet inulin er kendt for at kunne nedsætte dannelsen af skatol hos svin. Det skyldes at inulin ændrer tarmfloraen, så bakterier der danner skatol bliver holdt i skak. Samtidig bevirker den ændrede tarmflora at grisene får færre indvoldsorm. Inulin er imidlertid for dyrt til, at det kan betale sig at bruge det i svinefoder. Cikorierødder indeholder inulin og en række andre kulhydrater plus sekundære metabolitter. Derfor har vi undersøgt om cikorierødder kan erstatte ren inulin og derigennem mindske ornelugten, forbedre smagen og nedsætte grisenes smitte med sygdomsfremkaldende parasitter og bakterier. |
| Tipo: Journal paper |
Palavras-chave: Health and welfare; Feeding and growth. |
| Ano: 2005 |
URL: http://orgprints.org/9368/1/9368.pdf |
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| Thamsborg, Stig Milan; Roepstorff, Allan. |
| ABSTRACT: Organic livestock production has increased dramatically in recent years in Europe and other parts of the world. The aim of producing livestock under more natural conditions has led to a reversion to primarily outdoor production systems and less intensive housing when indoor, more forage-based diets, and a reduced reliance on external inputs like antiparasiticides. These major changes in livestock production systems may potentially result in re-emergence (or emergence) of parasitic infections. The basic objective of this paper is to give an overview of the available information on parasitic problems in organic livestock production with a focus on northern temperate regions. Furthermore, options for control that target these problems and are... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2003 |
URL: http://orgprints.org/4509/1/4509.pdf |
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| Mejer, Helena; Roepstorff, Allan. |
| Background: Organic pig production systems are commonly characterized by high helminth prevalences. This problem is partly associated with access to outdoor facilities such as pastures and more knowledge is needed on long-term pasture infectivity patterns to improve farmer advisory services and guidelines on pasture management. Methods: Six identical paddocks were originally contaminated in the spring to autumn of 2001 by pigs infected with high levels of Ascaris suum and low levels of Trichuris suis. Since then, no further eggs have been deposited and 3 of the paddocks have been ploughed to a depth of 20 to 28 cm and re-sown once a year while 3 paddocks remained untouched apart from yearly cutting of the vegetation. In the late spring and late autumn... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare; Pigs. |
| Ano: 2011 |
URL: http://orgprints.org/20004/2/20004.pdf |
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| Roepstorff, Allan; Mejer, Helena; Nejsum, Peter; Thamsborg, Stig Milan. |
| Helminths in pigs have generally received little attention from veterinary parasitologists, despite Ascaris suum, Trichuris suis, and Oesophagostomum sp. being common worldwide. The present paper presents challenges and current research highlights connected with these parasites. In Danish swine herds, new indoor production systems may favour helminth transmission and growing knowledge on pasture survival and infectivity of A. suum and T. suis eggs indicates that they may constitute a serious threat to outdoor pig production. Furthermore, it is now evident that A. suum is zoonotic and the same may be true for T. suis. With these ‘new’ challenges and the economic impact of the infections, further research is warranted. Better understanding of host–parasite... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare; Pigs. |
| Ano: 2011 |
URL: http://orgprints.org/20008/4/20008.pdf |
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| Früh, Barbara; Bochicchio, David; Edwards, Sandra; Hegelund, Lene; Leeb, Christine; Heinonen, Mari; Maupertuis, F.; Sundrum, Albert; Werne, Steffen; Wiberg, Sophia; Mejer, Helena; Prunier, Armelle; Roepstorff, Allan; Lubac, Stanislas; Bonde, Marianne; Rousing, Tine; Sundrum, Albert; Lindgren, Kristina. |
| This report reviews the available information on the welfare of pigs when maintained according to organic standards in Europe. It begins by overviewing the populations of organic pigs in different countries at the time of writing (2007), the organic standards which govern their management and the systems in which they are typically kept. It then reviews for each stage in the production cycle (sows, suckling piglets, weaned pigs and fattening pigs) the available literature on health and welfare problems which might be experienced by the animals and the hazards which might give rise to these problems. Finally the report reviews the methods current available for the measurement of pig health and welfare and the extent to which monitoring systems currently... |
| Tipo: Report |
Palavras-chave: "Organics" in general; Health and welfare. |
| Ano: 2011 |
URL: http://orgprints.org/18419/1/18419.pdf |
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| Mejer, Helena; Roepstorff, Allan. |
| The transmission of Ascaris suum was studied in outdoor reared pigs. From May to June, 2001 6 farrowing paddocks were naturally contaminated with A. suum using experimentally infected seeder pigs. Early July, 1 sow farrowed on each paddock. One piglet per litter was slaughtered every second week starting week 3 post partum (p.p.) for registration of liver white spots and recovery of A. suum from the lungs and the small intestine. The last pigs were slaughtered week 19 p.p. Faeces was examined for eggs and blood was analysed for A. suum specific antibodies. Weaning took place week 7 p.p. by removing the sow. Paddock infection levels were estimated by regular examination of soil samples and in late June and late November using parasite naïve tracer pigs.... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2006 |
URL: http://orgprints.org/9367/1/9367.pdf |
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| Mejer, Helena; Roepstorff, Allan. |
| De fleste almindelige indvoldsorm i danske svin er helt afhængige af værtsdyrenes nærmiljø, fordi en del af deres livscyklus skal gennemføres uden for værtsdyret. Ormene udskiller æg, som deponeres med værtens gødning i dennes omgivelser, hvor æggene dernæst udvikler sig til mere eller mindre hårdføre infektive stadier, som enten kan gensmitte værten eller smitte nye værtsdyr. Danske svin er gennem mange år blevet koncentreret i stadig større og mere intensive besætninger. Sammen med en udbredt brug af medicinering har dette forårsaget en markant reduktion i forekomsten og intensiteten af parasitter. Den økologiske driftsform, hvor forebyggende medicinsk behandling ikke er tilladt, og hvor dyrene skal have rigelig strøelse og adgang til udendørs... |
| Tipo: Report chapter |
Palavras-chave: Pigs; Health and welfare. |
| Ano: 2004 |
URL: http://orgprints.org/3243/1/3243.pdf |
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| Mejer, Helena; Roepstorff, Allan. |
| Der er generelt en højere forekomst af indvoldsorm i økologiske grise i forhold til indendørs grise. For at reducere forekomsten af indvoldsorm kan man bl. a. sørge for at nye dyr er parasitfri, holde en moderat belægningsgrad, samgræsse søer med kvier, bruge næsering, ændre foderets sammensætning og fodre grisene med rovsvamp. Derudover anbefales det at man benytter foldskifte, så man fjerner grisene fra smittekilden (ormenes fritlevende larver og æg). Et større markforsøg har vist at larver af knudeormen overlever dårligt i det fri og må overordnet anses for at være et mindre problem. Æg af spolormen og piskeormen kan derimod overleve i flere år selvom især pisleormens æg kan være lang tid om at blive infektive for grise. Grises optag af æg af... |
| Tipo: Journal paper |
Palavras-chave: Pigs; Health and welfare. |
| Ano: 2003 |
URL: http://orgprints.org/3229/1/FOJOenyt_August_2003.pdf |
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| Registros recuperados: 27 | |
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